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Finding the Fourth Proportional to 135,397.66, 203,095.88 and 55,472.68

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Solution

The fourth proportional to 135,397.66, 203,095.88 and 55,472.68 is: 83,208.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,397.66 : 203,095.88 = 55,472.68 : x
  2. Step 2: Convert to fraction form
    135,397.66/203,095.88 = 55,472.68/x
  3. Step 3: Cross multiply
    135,397.66x = 203,095.88 × 55,472.68
  4. Step 4: Simplify right side
    135,397.66x = 11,266,271,467.72
  5. Step 5: Solve for x
    x = 11,266,271,467.72/135,397.66
  6. Step 6: Final answer
    x = 83,208.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.